Brake



July 21, 1936. R. A. BABEL BRAKE Filed May 4, 1931 Patented July 21, 1936 2,048,420 BRAKE Raymond Alexandre Babel, Clichy, France, as-

signor to Bendix Brake Company, South Bend, Ind., a corporation of Illinois Application May 4, 1931,

In France May Serial No. 535,027

7 Claims. (Cl. 188-72) periphery thereof. Such rings are provided with centrally located ribs Illa and I Ia, extending 1011- This invention relates to brakes and more particularly brakes for vehicle wheels.

An object of this invention is to provide novel means for braking the rotating wheels of a vehicle in a gradual and progressive manner.

Another object of this invention is to provide novel braking means in which the braking force is exerted axially 'of the shaft the rotation of which is to be stopped.

Another object of this invention is to provide a novel braking device in which thebr'aking is effected by means of pressure exerted ona rotating :ihisll: by rings which are slidable to and from the A further object of the invention is to provide novel actuating means for eifecting the sliding movement of the braking rings to and from the disk.

Other objects and features of novelty will be apparent from the following detailed description when taken in connection with the accompanying drawing.

In the drawing wherein similar reference characters refer to like parts throughout the several views:

Fig. 1 is a view the brake.

Fig. 2 is a section on Fig. 3 is a detail the braking disk.

In the form of invention illustrated there is shown the spindle I of a conventional axle. Positioned on the spindle I is a hub 2, rotation of such hub on the spindle being freely allowed by means of ball bearings 3. The spindle is formed integrally with a stationary axle member 4 which carries, in any suitable manner, a fixed, non-rotatable arm 5, the function of which will be de-' scribed in detail hereinatter.

Carried by the hub 2 and rigidly fixed thereto in any suitable manner, preferably by rivets 6 as illustrated, is a disk member I, such disk being, of course, rigid with the hub and wheel and rotating therewith. Disk I is provided, as illustrated in Fig. 3 of the drawing, with radial slots 8, the same extending a short distance inwardly from the periphery of the disk and being provided in order to prevent distortion by heat. The disk is also provided with cooling va'nes 9, the same being disposed midway between the center and the periphery of the disk and being radially disposed.

Means are provided for braking the rotation of the disk. such means including rings III and II disposed on either side of the disk adjacent the showing the side elevation of the line 2-2 of Fig. 1. view, on a smaller scale, of

gitudinally of the rings. with two lugs I2, I3, disp Each ring is provided osed exteriorly of the rings and attached thereto by welding or other 5 suitable means and being site positions. Lugs I3 are openings to receive a pin tached, by suitable means, t

in diametrically oppoprovided with aligned I 4 which is rigidly ato the arm 5. Disposed about shaft I4 is a compression spring I6, the 10 ends of which bear agairist the interior faces of the lugs I3 and normally urge said lugs and the attached rings I0 and I I2 are provided with I away from disk I. openings to receive a pin Lugs I5, about which an interiorly of the lugs I2 is coiled a compression and which also serves III and II disk I. I9 and I5 toward and away from out of braking spring similar to spring I6, to normally urge the rings engagement with the It will be understood, however, that rings 0 II are free to slide on the pins I4 and the disk I against the force of the springs described. The braking rings IU and II are each provided with facing members I! which are composed of any suitable brake lining material for disk 1.

contacting with the Novel means are provided for positively urging the braking. rings I 0 and II into braking engagement with disk 1. Such external shoe members respectively pivoted on pin means comprise two I8 and I 9, the same being s 20 and 2| carried by a supporting member 22 which also carries pins I4 and I5. Shoes I9 and V-shaped cross-section,

I9 are formed with a the braking rings I0 and II being disposed within the cross-section of the shoes. The free ends of with angle members, the means to receive a Bowden the shoes are formed same having suitable cable, such cable being attached to shoe I8 at 22 and passing loosely through the angle member carried by shoe I9. In order to cause the shoe I9 to contract in unison with the cable operated shoe I8, the cable conduit is secured to the sho through the cable conduit e I9, and by reaction the shoes I8 and I9 are urged toward each other simultaneously. A

compression spring 23 surro unds the Bowden cable between the two angle members and normally urges the shoes out of conta the braking rings I9 and I vided to protect the operating from dust and water.

cting engagement with I. A cover 29 is proparts of the brake The operation of the device is caused by deby the operator. Such den cable to draw the s I8 and I9 together,

rings into braking engagement with disk 1.

While there has been shown and described one embodiment of the invention, it is to be understood that the invention is not limited thereto. Various changes in the shapes, sizes and manner of assembling the various component parts may be resorted to without departing from the scope of the invention as will occur to those skilled in the art. Reference will therefore be had to the appended claims for a definition of the limits of the invention.

What is claimed is:

1. A braking device including a rotatable disk, annular rings disposed adjacent the sides of said disk, ribs on the rings, and means engaging said ribs to efiect braking engagement between said rings and said disk including pivoted shoes embracing said ribs and movable in the plane of rotation of the disk. 1

2. A brake comprising a friction element including a disk having a plurality of radial slits extending inwardly part way and a plurality of cooling vanes inwardly disposed from the annular area having said slits.

3. A brake comprising a friction element including a disk having spaced radial slits extending inwardly part way from the outer edge and spaced radial cooling vanes inwardly disposed from the outer edge.

4. In a brake a friction element consisting of an annular disk member and an annular rib stamped centrally therein.

5. A brake comprising a rotatable disk having a plurality of radial slits and a plurality of radial cooling vanes, and friction elements adaptable for cooperation therewith including annular members having annular ribs and a contractible member embracing the annular members.

6. A brake comprising a rotatable disk having radial slits and radial cooling vanes, annular axially movable members adaptable for cooperation with the rotatable member, annular ribs on the axially movable members, and a contractible member including corresponding pivotal shoes straddling the axially movable members and embracing the annular ribs on the axially movable 2 members.

'7. In a braking mechanism, a rotating hub, a disk fixed thereon, a support, annular rings carried thereon and disposed adjacent the sides of said disk and normally urged therefrom, a plurality of shoes pivotally carried by said support, the cross section of said shoes surrounding said rings, and means for moving said shoes about their pivots for effecting braking engagement between said rings and said disk.

RAYMOND ALEXANDRE BABEL. 

